Electricity conductor unit



Dec. 24, 1946. .1. F. OBRIEN ELECTRICITY CONDUCTOR UNIT Filed Jan. 50,1942 INVENTOR seph F1730 Emen ATTORNEY fiatented Dec. 194 6 2,413,032ELECTRICITY coNnUcron Uurr Joseph F. OBrien, Jersey City, N. .L,assigns:- to John B. Pierce Foundation, New Yorir, N. Y a corporation ofNew florl:

- Application January 30,1942, Serial uaceaeoe Claims. (cl. 174-117)This invention relates to electrical wiring systems, and in particularto an improved electricity conductor unit therefor.

it is an object of the invention to provid an electricity conductor unitof simple and inexpensive construction, having a hard, scuff-proof outersheath, and adapted for mounting on a wall or other exposed location.

it is a further objectv of the invention to provide an electricityconductor unit affording facilities for the insertion of outlets in awiring system at desired locations.

according to a preferred form of the invention, my improved electricalconductor unit embodies electrical conductors insulatedly mounted in substantially uniform spaced relationship within an insulating casingformed from vulcanized fiber like hard material.

of the electrieity conductor unit utter operation by the means shown inFig. 4.

' and rigidity.

Referring to the drawing, an improved wiring system embodying thepresent invention includes conductor units 56, id, of indeterminatelength, mounted on sluiace oi a wall it, and mutually interconnect-es bymeans including the outlet as Vulcoi-il" has been found satisiacmry forthe outer sheathing id.

The electricity conductors it, it may be tubular, as shown in 2, or oi.other cross section Said outer sheathing may be initially of oval withinwhich, at the respective lateral margin therepf, are positionedelectricity conproviding proper conduction of electricity. T11- ductors.Following the insertion of the conductors as aforesaid, the assembly maybe run between suitable rolls or dies, having a width less than thewidth between the conductors, to form the wall of such outer housingabout the conductors. The resulting conductor unit has a dumbbellconfiguration in cross section, the centrel web portion serving as aninsulating barrier between the conductors, maintaining the same inproper spaced relationship.

Other features and advantages of the invention will hereinafter appear.

in the drawing- Fig. 1 is a perspective view of a portion of an electricwiring system employing my improved electricity conductor, andillustrating the interconnection of conductor units by means aflordlugoutlet facilities;

Fig. 2 is an enlarged elevation, partly in sec- I tion, showing a formof interconnection between the electricity conductors of the conductorunit and the outlet-provided device of Fig. 1;

Fig. 3 is a transverse sectional view of a seam-,

less form of electricity conductor unit in a preliminary stage ofmanufacture;

Fig. 4 is a. similar transverse sectional view of the construction ofFig. 3, illustrating the op eration upon the assembly by rolls or likemeans for displacing and compressing the central portion of the walls ofthe seamlesstube to form the insulating web intermediate the electricalconductors; and

Fig. 5 is an elevational view, partly in section,

forming web so buler conductors are advantageous tor the reason thatelectrically conductive pins 39 or the like may be used forinterconnecting adjacent tubular conductors, as indicated in Fig. 2;tubular conductors have a ifurther advantage in that when a conductorunit it) is to be shortened, the unit may be cut transversely at anylocation along its length and the tubular conductors are in proper statefor electrical connection with conductor units oroutlet units withoutfurther operation.

As appears in Fig. 3, the conductors it may be positioned within agenerally ovate seamless tube of Vulccie or like material, said materialbeing, preferably, in arelatively soft, or partially cured, state atthis stage of msembly. Following the insertion of conductors M, thesheath material may be operated upon by relatively narrow rollers it,I53, see Fig. 4, or drawn between suitable dies, to displace inwardlythe wall portions between the conductors as, thereby of insulationmaterial between the conductors M. Goncurrently with the operation ofthe rollers I 8 or equivalent, or subsequent thereto, the outer sheathmaterial may be cured to final status, thereby giving to such outersheath a permanent set and bond of the sides of such sheath and adhesionbetween the sheath and the conductors.

The units it may 2! at suitable intervals, through which screws or nailsmay be passed to fasten the conductor unit to a wall surface.

Conductor units formed pursuant to this invention are characterized bytoughness of outer surface, and substantial structural strength,parmaterial known in the trade be provided with openings cargoes 3 aticularly with respect to sagging or resistance to bending in the planeof the web 2b. Screws or the like for securing the units it to a wallmay, therefore, be widely spaced; and when the outlet units ii arerelatively frequent, the com ductor units it may be adequately securedby the bodies of the outlet units, which, as shown in Figs. 1 and 2,conform to the contour of the sheath iii. i

As appears in Figs. 1 and 2, adjacent sections of conductor units it maybe interconnected through the agency of an outlet provided unit i2having a body 22 of insulation material, and suitable conductors '23, 23mounted therein for registry with the conductors it, i i of theconductor units. When tubular conductors are employed, the pins it maybe frictionally inserted into the adjacent conductors i i, 23, tocomplete the electrical connection thereof.

Suitable contact devices as, as may be provided on the conductors '23. Ascrew 25 may pass through the body of unit ii? for .securernent thereof.

The end walls of unit 52 desirablypverhang the end portions of the unitsill and conform to the configuration thereof, to secure the units andprevent exposure of the conductors at the y point of interconnection.

prising a plurality of bare conductors disposed in spaced relationwithin a seamless casing of rigid insulation material of substantiallyuniform wall thickness throughout, a portion or said casing wall betweenthe spaced conductors being tubular casing of rigid insulation material,and

forcing a; portion of the casing wall between the spaced conductors intofixed juxtaposition with its opposite wall portion whereby to' form aclosed rigid .web for maintaining uniform transverse spaced relationshipbetween the conductors.

3. A conductor strip comprising a seamless, initially tubular, elongatedsheath of relatively rigid insulating material, at least one wall ofwhich, intermediate its lateraI edges, is deformed and deflected intosubstantial contact with its 0D- posite wall to thereby provide arelatively rigid web and two spaced-apart conduits at the lateral edgesthereof, and conductors disposed in said conduits,

l. A conductor strip comprising a seamless, initially tubular, elongatedsheath of relatively rigid insulating material, the wall portionsintermediate the lateral edges being deformed and deflected intosubstantial contact to thereby provide a relatively rigid web and twospacedapart conduits at the lateral edges thereof, and conductorsdisposed in said conduits.

5. A conductor strip comprising a seaesa initially tubular, elongatedsheath of vulcanized fiber insulating material, the wall portionsintermediate the lateral edges being deformed and deflected intosubstantial contact to thereby provide a relatively rigid web and twospaced-apart conduits at the lateral edges thereof, and con= ductorsdisposed in said conduits.

JOSEPH F. OBRIEN.

